Award-winning journalist Richard Harris has reported on a wide range of topics in science, medicine and the environment since he joined NPR in 1986. In early 2014, his focus shifted from an emphasis on climate change and the environment to biomedical research.
The ultimatum by war cabinet member Benny Gantz reflects discontent among Israel's leadership about Prime Minister Benjamin Netanyahu's handling of the Gaza war and his far-right political partners.
A helium leak pushed back a planned launch to May 25. Boeing's program that would shuttle astronauts to and from the International Space Station has been plagued with problems.